Rihanna concert documentary airs May 6 on Fox - Article Photos 1/1

FILE - In a Sunday, Feb. 10, 2013 file photo, Rihanna arrives at the 55th annual Grammy Awards, in Los Angeles. Rihanna's representative said that the singer's show in Baltimore on Tuesday, March 12, 2013 would be postponed. Rihanna canceled her Sunday show in Boston because she was sick. The concert promoter said fans are instructed to retain their tickets pending rescheduling show date information. The next date on Rihanna's tour is Thursday in Philadelphia. (Photo by Jordan Strauss/Invision/AP) ORG XMIT: NY127